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(1) Air-conditioning unit error codes
The following is a list of the error codes and their meaning.
0110 “Equipment abnormality 1”
0120 “Equipment abnormality 2”
0403 “Serial transmission trouble”
0900 “Test run”
1000 “Ref.cycle abnormality”
10*0 “Ref.cycle abnormality in line *”
11** “Ref.cycle temperature abnormality - Common operand: **”
12** “Ref.cycle temperature abnormality allowance - Common operand: **”
13** “Ref.cycle pressure abnormality - Common operand: **”
14** “Ref.cycle pressure abnormality allowance - Common operand: **”
1500 “Ref.cycle not operate due to overcharge”
1501 “Ref.cycle not operate due to undercharge” (/compressor shell temperature abnormality)
1502 “Ref.cycle not operate due to liquid back”
1503 “Ref.cycle not operate due to coil frost”
1504 “Ref.cycle not operate due to overheat protection”
1505 “Ref.cycle not operate due to compressor vacuum operation protection/refrigerant low
temperature abnormality”
1506 “Ref.cycle not operate due to refrigerant pump abnormality”
1559 “Oil balance circuit abnormality”
1600 “Ref.cycle - Preliminary overcharge refrigerant trouble”
1601 “Ref.cycle - Preliminary lacked refrigerant trouble”
1605 “Ref.cycle - Preliminary suction operation protection”
1607 “Ref.cycle - Preliminary CS circuit closed detection abnormality”
1608 “Ref.cycle - Preliminary control valve abnormality”
1659 “Ref.cycle - Preliminary oil balance circuit abnormality”
2000 “Water system abnormality” (Pump interlock abnormality)
20*0 “Water system abnormality in line *”
21** “Water system temperature abnormality - Common operand: **”
22** “Water system temperature abnormality allowance - Common operand : **”
23** “Water system pressure abnormality - Common operand: **”
24** “Water system pressure abnormality allowance - Common operand: **”
2500 “Water system not operate due to water leak”
2501 “Water system not operate due to water supply suspension”
2502 “Water system not operate due to drain pump abnormality”
2503 “Water system not operate due to drain sensor abnormality/float switch function”
2504 “Water system not operate due to liquid level abnormality”
2505 “Water system not operate due to cool water valve abnormality”
2506 “Water system not operate due to warm water valve abnormality”
2600 “Water system operation restricted due to water leak”
2601 “Water system operation restricted due to water supply suspension/humidifier water supply
suspension”
2602 “Water system operation restricted due to drain pump abnormality”
2603 “Water system operation restricted due to drain sensor abnormality”
2604 “Water system operation restricted due to liquid level abnormality”
3152 “Air system - Control box temperature abnormality”
3252 “Air system - Preliminary control box temperature abnormality”
3600 “Air system operation restricted due to filter clogging”
3601 “Air system operation restricted due to filter maintenance”
3602 “Air system operation restricted due to damper position detecting abnormality”
37** “Air system operation humidity abnormality allowance - Common operand: **”
4000 “Electric system abnormality”
40*0 “Electric system abnormality in line *”
4100 “Electric system not operate due to overcurrent shut-off”
4101 “Electric system not operate due to overcurrent protection”
4102 “Electric system not operate due to open phase”
4103 “Electric system not operate due to reversed phase/open phase”
10. Error Code List